Home / 455,245.31-628,240.70-251,292.52

Finding the Fourth Proportional to 455,245.31, 628,240.70 and 251,292.52

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Solution

The fourth proportional to 455,245.31, 628,240.70 and 251,292.52 is: 346,784.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,245.31 : 628,240.70 = 251,292.52 : x
  2. Step 2: Convert to fraction form
    455,245.31/628,240.70 = 251,292.52/x
  3. Step 3: Cross multiply
    455,245.31x = 628,240.70 × 251,292.52
  4. Step 4: Simplify right side
    455,245.31x = 157,872,187,727.19
  5. Step 5: Solve for x
    x = 157,872,187,727.19/455,245.31
  6. Step 6: Final answer
    x = 346,784.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.